基于渔网分割的城市低空空域建模OA

Aiming at the fine-grained modeling problem of urban low-altitude airspace,we proposed a scenario modeling method based on grid division.Firstly,we preprocessed the 2D building data and converted it into 3D models using ArcScene,while created building buffer zones to ensure the safety of surrounding airspace.Then,we applied the grid division technique to divide the study area into grids,followed by 3D expansion of the grid points at specified heights,forming multi-layered 3D airspace data.Finally,we used a filtering algorithm to remove the grid points overlapped by buildings and buffer zones,resulting in the usable airspace.An example study and comparative analysis in Jiangning District,Nanjing City,demonstrated that this method could effectively divide usable airspace in complex urban environment,providing strong support for urban low-altitude airspace management and UAV path planning.